The Marlins selected Navarreto's contract from Triple-A Jacksonville on Sunday.
He'll provide Miami with a second option at catcher behind Joe Mack after the Marlins moved Liam Hicks (back) to the 10-day injured list Sunday. Mack is expected to shoulder a heftier workload behind the dish while Hicks is shelved, so Navarreto may not get more than a start or two a week while he's up.